Land-tilling implement



May 22, 1922s.

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J. E. BODA LAND TILLING IMPLEMENT if@ fw, ./maLZf/J Filed Jan. 13, 1927 JT f, y 2. 2

"May 22, 1928.

J. E. BODA LAND TILLING IMPLEMENT Filed Jan. 1 1927 3 Sheets-Sheet 2 May 22, 1928; 1,670,838

J. E. BODA LAND TILLING IMPLEMENT Filed Jan. 155I 1927 5 Sheets-Sheet 5 Patented May 22, 1928.

UNITED STATES PATENT oFElcE.

' JOSEPH E. BODA, OF DIXON, ILLINOIS, ASSIGNOR TO J. I. CASE THRESHINGMACHINE COMPANY, OF WISCONSIN, A CORPORATION F WISCONSIN.

LAND-TILLING IMPLEMENT.

Application led January 13, 1927. Serial No. 160,801.

and a plurality of spaced plow or harrowl discs fast on the shaft. Heretofore, so far as I am aware, implements ofthis character have been made of a fixed and unchangeable width, so that in use they invariably plow or harrow a strip of ground of constant width.

Owing to varying conditions of soil, varying available tractor power, and other reap sons, it is often desirable to narrow or widen the working capacity of the implement; and in order to avoid the necessityof maintaining in service two or more implements of 5 varying widths, I have designed the present 2 provide inan implement of this character means whereby lthe working length of the plow or harrow shaft may be easily changed with an increase or decrease of the number of discs on the shaft, and without the' necessity of altering the position of the draft con-A nections, and, to accommodate the lengthening or shortening of the disc shaft, involving merely the shifting of the position of the rear furrow wheel, itsjournal bracket and the frame lowering and lifting lever and segment.

gin order that the invention may be clearly understood, I have, in the accompanyin drawings, illustrated a simple and practica embodiment of the principle .of the invention; and referring thereto- Fig. 1 is 4a top plan view of a well known type of disc plow equipped with my present improvement;

Fig. 2 is a side elevation of the rear porlnrion of the plow viewed from the left of Fig. 3 isa rear elevation, broken out between its ends, and omitting the front and rear furrowwheels;

Fig. 4 is an enlarged vertical section, broken out between its ends, of the removl able shaft section;

improvement, the main object o'f which is to.

Fig. 5 is an enlarged vertical section taken on the line 5-'-5 of Fig. 3;

'Fig 6 is a group view, illustrating different lengths in the make up of the removable shaft sectlons; l

The main structural features of 'the plow, which are old and well known, may be briefly outlined as follows. 10 designates an obliquely disposed frame bar or beam of the cross-sectional form indicated in Fig. 5, to the front face of which are bolted brackets 11 and'12 in turn connected at their forwardv ends by an oblique bar 13 lying parallel with the frame bar 10. To the front bar 13 are attached by brackets 14 and 15 a pair of draft bars 16 and 17 carrying at their forward ends a cross-bar 18 to which is pivoted at 19 the draft beam 20, the direction of ull being controlled by an oblique auxiliary draft bar 21 adjustably connected at 22 to one end of the cross-bar 18.

Journaled in bearings 23 and 24, the former of which is attached to the bracket 1l and the latter to a brace 25 between the other limb of the bracket 11 and the frame bar 10 is the bent axle 26 of the land wheel 27.

Bolted between anextension of the bar 13 and an angle bracket 28 bolted to the outer side of the bracket 12 isa block 29 carrying the vertical Iournal 30 of the bent axle 31 of the front furrow wheel 32.

rlhe frame is equipped with the usual frame raising and lowering levers and se'gments indicated in the drawings, but not herein specifically described as the same are old and known andl are not related to the novel subject-matter of the present invention.

Slidably mounted on the outer side of the rear end portion of the frame bar 10 (Fig. 5), and attached to the latter by a through bolt 33, is a rearwardly extending bracket 34 carrying the vertical bearing 35 of a bent shaft 36 on the lower end of which is jour- -.naled the rear furrow wheel 37. Between the axle and 'the frame are provided the usual link and lever and segment connecy llt) ` is carried on pivot pins 46 a journal 47.

, brackets 38 and 45, and each carries at its lower end a journal 49, the detailed struc-A Intermediate hanger brackets 48 (herein shown as three in number) are disposed at equally spaced intervals between the end ture of which, as also of the end journal 47, is illustrated in the enlarged view Fig. 4.

In the end journals 40, 47, and the intermediate journals 49 is mounted the sectional' dise shaft carrying fast thereon the uniformly spaced discs, t-he structural details of said shaft and discs preferably being as follows.

In the instance shown, the shaft 'carries a total of sixteen discs 50, divided into four sect-ions each carrying four discs. Each section includes a square clamp bolt 51 extending axially through a group of spacing sleeves 52 between adjacent discs, each of said spacing discs being formed with heads 53 and 54 bearing against the concave face of one disc and the convex face of the adjacent disc. The convex face of one end disc is engaged by a clamping head 55 integral with which is a hollow trunnion 56 rotatable in the journal 40 and abutting against an anti-friction thrust bearing 57. The hollow t-runnion 56 accommodates the head of the bolt 51. The concave face of the other end disc of the sectional group is engaged by a clamping head 58, integral with which is a hollow square trunnion 59 having a square bore fitting the bolt 51, and the group of discs and spacing sleeves are tightly clamped by a nut 60 bearing against the end of the trunnion 5.9. Surrounding the trunnion 59 is a trunnion 61 with a square bore that has a bearing in the intermediate journal 49 and is integral with a clampinghead 55', the latter being centrally apertured to receive the second square clampingv bolt 51. The second, third and fourth sections of the disc shaft are identical with the rst section above described. The several sections of the disc shaft are rotatably locked together by means of a tension link 62 connected at one end to a vertical extension 45 (Fig. 3) of the bracket 45 and having a threaded other end passed through a hole in a bracket 63 attached to the beam 10 and equipped with a draw nut 64 and lock nut 65.

The beam 10 is provided with a group of bolt holes 64 spaced at distances equal to the spacing of the discs 50.

terasse Assuming that in its full length the disc shaft comprises the four sect-ions shown, each carrying four discs, if it is desired to reduce the length of the shaft to 12 discs, the next to the rear section can be readily taken out; this being done by first removing the bolts 33 and 42 from the bracket 34 and beam extension 43, which permits the entire rear or left hand section to be shifted endwise of engagement with the trunnion 61 and bearing 49. rllhe hanger bracket 48 is then detached from beam 10, which permits bearing 49 and the entire next shaft section to be withdrawn. 'Ihe supporting bracket 34 of the rear furrow wheel with the end shaft sect-ion suspended therefrom is then slid along the beam 10 until the hole of the fastening bolty 33 registers with the hole of the fastening bolt of the hanger 48. The trunnion 59 is entered into the trunnion 61 of the third shaft section, the hanger bracket 38 is bolted at its upper end to the bracket 34 and beam 10 in the new position of said bracket, while the upper ends of the braces 41 may be bolted to the beam through the next adjacent hole 64 in the latter, said braces being provided with an extra hole 41| for this purpose. In this way, the shaft may be shortened by the elimination of one complete intermediate section; thus, in the instance shown, providing a plow with twelve discs instead of sixteen.

By the use of clamping bolts of dierent lengths to serve a group of three or two discs, or a single disc, as illustrated in Fig. 6, the shortening of the disc shaft by dropping out one, two, or three discs, in lieu of a complete section of four discs may be'effected, by simply withdrawing the desired number of discs and spacers with the original clamp bolt, and substituting a lesser number of discs and spacers with a clampbolt of appropriate length, and then resetting the bracket 34 to appropriate position on the beam 1()v so as to support the end bearing 40 in the new position required by the shortened shaft.

I have herein illustrated and described one simple and practical embodiment of the principle of the invention which in practice has been found to satisfactorily effectuate the stated purpose or object thereof, but manifestly the structural details may be modified and changed without involving any departure from the principle of the invention or sacrificing any ,of the advantages thereof, and hence I reserve all such variations, modifications and mechanical equivalents as fall within the spirit and purview of the appended claims.

I claiml 1. In a. tillage implement of the character described, the combination of a, frame bar, spaced brackets carried by said frame bar, shaft bearings carried by said brackets, a.

plurality of separable shaft sections each disposed between and at its ends journaled in adjacent bearings, and discs fast on said shaft sections.

2. lin a tillage implement of the character described, the combination of a lframe bar, end and intermediate brackets carried by said frame bar, end and intermediate shaft bearings secured to the lower ends of said brackets, and a plurality of separable shaft sections carrying discs and each disposed between and at its ends journaled in adjacent shaft bearings; one of said end bearings and shaft sections being adapted to be substituted for the adjacent intermediate bearing and shaft section upon removal of said intermediate bearing and shaft section.

3. ln a tillage implement of the character described, the combination of a frame bar, a furrow wheel bracket adjustable t0 different positions lengthwise of said frame bar, a journal bearing on said bracket, a furrow wheel shaft journaled in said bearing, a furrow wheel on said shaft, end and intermediate brackets carried by said frame bar, end and intermediate shaft bearings secured to the lower ends of said brackets, and a plurality of separable shaft sections, each disposed between and at its ends journaled in Vadjacent shaft bearings; one end bracket and its associated end bearing and end shaft section being adapted to be substituted for the adjacent intermediate bracket and its associated shaft bearing and shaft section upon removal of said intermediatebracket, shaft bearing and shaft section.

4. A specific embodiment of claim 3, wherein the frame baris formed with bolt holes spaced at distances corresponding to 5. A specific embodiment of claim 3,y

wherein thel frame bar is formed with bolt holes spaced at distances corresponding thespacing of the discs on the shaft sectlons and wherein said shaft sections are capable of being lengthened or shortened by amounts corresponding to an integer or multiple of the distance between adjacent holes, and wherein the brackets carrying the shaft bearings are attached to the frame ybar by bolts passed through certain of said holes.

`6. In a gang disc plow, the combination of a frame bar, brackets carried by said frame bar, bearings carried by said brackets, a plurality of separable, axially aligned, multipledisc shaft sections journaled at their ends in said bearings, and means whereby said sec-pA tions are rotatably locked together.

7. In a tillage implement of the character described, an earth working member corn prising a plurality of separable sect10ns d15-y posed end to end, each of said sections comprising a plurality of centrally apertured discs, centrally apertured spacing sleeves between said discs, centrally apertured clamps engaging the outer sides of the end discs of theseries, axially bored trunnions integral with said clamps, the trunnions at adjacent ends of adjacent sections bein adapted to interfit, and a clamping bo t extending through the apertures of said discs, sleeves and clamps, and the bore of one of said trunnions and rigidly uniting saiddiscs, sleeves and clamps.

JOSEPH E. BODA.

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